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ҩ | ҩƷƳʱ | һЧ ͣҩ |
ҩƷƳʹã |
90% | ||
ƫ | Ч | ۸ϵ | 95% | |||
ͳ ⡢) |
20mmϣѪ ̺࣬ |
30 | ˴Ѫ࣬ ܻḴ |
Ѹ |
40%-65% | |
ͨƷ ʽ) |
ͨ | 5mm-15mm֮ǰ ָа̺ |
20-40֮ | һĸ | ڸܣ ¶ |
5%-30% |
|
ڿ500 Ұ |
ڽΪ3-5mm ֯ʧ ȫް̺ |
15ӣ ˫30 |
һԳ ١Ϊۿ ܡ |
һ֧һμ ɰҸţ η |
0.8% |